Merge tag 'pull-misc-20240409' of https://gitlab.com/rth7680/qemu into staging

target/m68k: Fix fp accrued exception reporting
target/hppa: Fix IIAOQ, IIASQ for pa2.0
target/sh4: Fixes to mac.l and mac.w saturation
target/sh4: Fixes to illegal delay slot reporting
linux-user: Fix waitid return of siginfo_t and rusage
linux-user: Preserve unswapped siginfo_t for strace
tcg/optimize: Do not attempt to constant fold neg_vec
accel/tcg: Improve can_do_io management, mmio bug fix

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* tag 'pull-misc-20240409' of https://gitlab.com/rth7680/qemu:
  linux-user: Preserve unswapped siginfo_t for strace
  accel/tcg: Improve can_do_io management
  target/s390x: Use insn_start from DisasContextBase
  target/riscv: Use insn_start from DisasContextBase
  target/microblaze: Use insn_start from DisasContextBase
  target/i386: Preserve DisasContextBase.insn_start across rewind
  target/hppa: Use insn_start from DisasContextBase
  target/arm: Use insn_start from DisasContextBase
  accel/tcg: Add insn_start to DisasContextBase
  tcg: Add TCGContext.emit_before_op
  target/m68k: Map FPU exceptions to FPSR register
  target/sh4: add missing CHECK_NOT_DELAY_SLOT
  target/sh4: Fix mac.w with saturation enabled
  target/sh4: Fix mac.l with saturation enabled
  target/sh4: Merge mach and macl into a union
  target/sh4: mac.w: memory accesses are 16-bit words
  target/hppa: Fix IIAOQ, IIASQ for pa2.0
  linux-user: replace calloc() with g_new0()
  linux-user: Fix waitid return of siginfo_t and rusage
  tcg/optimize: Do not attempt to constant fold neg_vec

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 12 insertions, 2 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index d6670237fb..0c0bb9d169 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1521,6 +1521,7 @@ void tcg_func_start(TCGContext *s)
 
     QTAILQ_INIT(&s->ops);
     QTAILQ_INIT(&s->free_ops);
+    s->emit_before_op = NULL;
     QSIMPLEQ_INIT(&s->labels);
 
     tcg_debug_assert(s->addr_type == TCG_TYPE_I32 ||
@@ -2332,7 +2333,11 @@ static void tcg_gen_callN(TCGHelperInfo *info, TCGTemp *ret, TCGTemp **args)
     op->args[pi++] = (uintptr_t)info;
     tcg_debug_assert(pi == total_args);
 
-    QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link);
+    if (tcg_ctx->emit_before_op) {
+        QTAILQ_INSERT_BEFORE(tcg_ctx->emit_before_op, op, link);
+    } else {
+        QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link);
+    }
 
     tcg_debug_assert(n_extend < ARRAY_SIZE(extend_free));
     for (i = 0; i < n_extend; ++i) {
@@ -3215,7 +3220,12 @@ static TCGOp *tcg_op_alloc(TCGOpcode opc, unsigned nargs)
 TCGOp *tcg_emit_op(TCGOpcode opc, unsigned nargs)
 {
     TCGOp *op = tcg_op_alloc(opc, nargs);
-    QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link);
+
+    if (tcg_ctx->emit_before_op) {
+        QTAILQ_INSERT_BEFORE(tcg_ctx->emit_before_op, op, link);
+    } else {
+        QTAILQ_INSERT_TAIL(&tcg_ctx->ops, op, link);
+    }
     return op;
 }